diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2009-09-05 22:04:36 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2009-09-05 22:04:36 +0200 |
| commit | abb3587fe939d469a44f2097bae361aabd269f3f (patch) | |
| tree | d4a6b1a17080c42f83da194db4053055ab000a14 /libc/misc/utmp | |
| parent | 27893e6651e64ad35f417ab665b8d1669fd03f61 (diff) | |
CLOEXEC: use open(CLOEXEC) if exist; do not check fcntl(FD_CLOEXEC) failure
text data bss dec hex filename
- 370 0 0 370 172 libc/misc/dirent/opendir.o
+ 366 0 0 366 16e libc/misc/dirent/opendir.o
- 375 4 0 379 17b libc/pwd_grp/lckpwdf.o
+ 356 4 0 360 168 libc/pwd_grp/lckpwdf.o
- 248 0 0 248 f8 librt/shm.o
+ 209 0 0 209 d1 librt/shm.o
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libc/misc/utmp')
| -rw-r--r-- | libc/misc/utmp/utent.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/libc/misc/utmp/utent.c b/libc/misc/utmp/utent.c index f0700af21..7d8a2d3c1 100644 --- a/libc/misc/utmp/utent.c +++ b/libc/misc/utmp/utent.c @@ -34,24 +34,29 @@ static const char *static_ut_name = default_file_name; static void __setutent(void) { if (static_fd < 0) { - static_fd = open(static_ut_name, O_RDWR); +#ifndef O_CLOEXEC +# define O_CLOEXEC 0 +#endif + static_fd = open(static_ut_name, O_RDWR | O_CLOEXEC); if (static_fd < 0) { - static_fd = open(static_ut_name, O_RDONLY); + static_fd = open(static_ut_name, O_RDONLY | O_CLOEXEC); if (static_fd < 0) { return; /* static_fd remains < 0 */ } } - /* Make sure the file will be closed on exec() */ - fcntl(static_fd, F_SETFD, FD_CLOEXEC); - // thus far, {G,S}ETFD only has this single flag, - // and setting it never fails. - //int ret = fcntl(static_fd, F_GETFD, 0); - //if (ret >= 0) { - // ret = fcntl(static_fd, F_SETFD, ret | FD_CLOEXEC); - //} - //if (ret < 0) { - // static_fd = -1; - //} + if (O_CLOEXEC == 0) { + /* Make sure the file will be closed on exec() */ + fcntl(static_fd, F_SETFD, FD_CLOEXEC); + // thus far, {G,S}ETFD only has this single flag, + // and setting it never fails. + //int ret = fcntl(static_fd, F_GETFD, 0); + //if (ret >= 0) { + // ret = fcntl(static_fd, F_SETFD, ret | FD_CLOEXEC); + //} + //if (ret < 0) { + // static_fd = -1; + //} + } return; } lseek(static_fd, 0, SEEK_SET); |